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1. Your observations should reveal a difference in at least one property between sodium benzoate and benzoic acid. What property was that, and what observation will reveal the difference?
4. When you lower the pH of a sol of sodium benzoate a ppt forms, a)What will happen if you raise the pH after the reaction by adding aqueous NaOH? Why?
5. Water solubilities of oxalic acid and sodium oxalate at RT are 10g/100 ml and 3.7 g/100 ml respectively. Could you prepare oxalic acid by adding HCl to a solution of sodium oxalate, cooling it to room temperature, and filtering the resulting mixture? Explain Why or why not?
The relationship of [A]t / [A]o = 0.50^n, where n=number of half lives. n = I understand that the linear plot of 1/[C4H6] means second order.. but i do not understand how to calculate the half life from this information for part b.
The rate constant for this reaction at 25 degrees C is 4.9 x10-6 L/(mol s) while the rate constant at 35 degrees Cis 1.5 x 10-5 L/(mol s). Use this data to calculate the energy of activation for this reation.
What proportion of 3-phosphoglycerate will carry 14C after five enzymatic turnovers (five equivalents of CO2 are fixed) if purified active
Which plot would not have a slope from which the indicated quantity for the reaction A ? Product(s) could be determined
How much heat is required to warm 219 g of ice from -45.7°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C
the appropriate number of significant figures. Use leading zeros if appropriate.
Iodine does not have a permanent dipole and is therefore a non-polar molecule. Why Iodine does not have a permanent dipole a) electronegativities of two iodine atoms are identical b) two iodine atoms will cause partial charge separation
Determine the atomic number and valence orbital that is filling for the element that would appear below radium in the periodic table.
A gas occupying a volume of 395 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings.
For each of the following combinations of (delta H) ?H° and (delta S ) ?S° for the reaction at 25 ° C, describe whether or not the reaction will be spontaneous at 25 ° C and what will happen it the temperature is increased. Explain your descriptio..
Calculate ΔHo fusion and ΔSo fusion for the substance If the pressure is increased to 120 bar, the melting temperature increases to 375.88 K. ?
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